strum, science is a model constructed from scientific hypotheses. What is the difference between climate change hypotheses and scientific hypotheses? A scientific hypothesis can be tested.
Climate science produces models that describe what happened in the past in order to generate current measurements. The model takes historical data, and churns out the right number for today - hurrah!
We then look at the future predictions of that model and turn it into policy and taxes, but at no point is that model tested - it fits the old data, and it is right now, and that is good enough seemingly for most people.
It also seems that when you have new historical data that then doesn't fit the existing model, or changes the model forecast, then the implication is that the model is wrong, and it is tweaked until it gives the forecasts that are desired.